Rare Oak Street Bootmaker Trench Boot with Vibram Christy Sole - Size 10.5D in black Chromexcel. I simply don't wear them enough. Great upgrade in leather from Red Wing Boots. - Goodyear Welt Construction. Horween® Chromexcel® Leather. Partially-Structured Toe. White Vibram Christy Sole. Calfskin Vamp Lining. Tone-On-Tone Stitching. Black Brass Eyelets. - Developed to embody the character of Chicago, the Elston last is engineered specifically for our line of Everyday Boots, providing exceptional all-day comfort for nearly all foot types with a generous toe box. - Chromexcel is made using proprietary techniques and formulas developed over 100 years ago in a factory still owned and operated by the Horween family in Chicago. It's characterized by a rich pull-up in full aniline, hand-rubbed finish, superior comfort, and durability. Chromexcel was made famous by its patina—the unique character of each hide which comes to life with wear.